In the UK, 'free-range' is a legal designation, as opposed to battery-farmed. To call eggs or poultry free-range, certain standards must be met - not very high

In the UK, 'free-range' is a legal designation, as opposed to battery-farmed. To call eggs or poultry free-range, certain standards must be met - not very high standards, but enough to exclude stacked-cage-based methods. We also have various other marks defined by other bodies: some companies (e.g. Marks & Spencer, a supermarket chain) define an in-house standard, some are defined by charities (e.g. the RSPCA, a bird conservancy), and so on. I suppose similar things exist in the US?